linux下的socket 编译段错误是怎么回事,求教
代码如下,请教各位大神
server端:
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/wait.h>
#define SERVPORT 3333 /*服务器监听端口号 */
int main()
{
int sockfd,client_fd; /*sock_fd:监听socket;client_fd:数据传输socket */
int sin_size;
struct sockaddr_in my_addr; /* 本机地址信息 */
struct sockaddr_in remote_addr; /* 客户端地址信息 */
if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
{
perror("socket创建出错!"); exit(1);
}
my_addr.sin_family=AF_INET;
my_addr.sin_port=htons(SERVPORT);
my_addr.sin_addr.s_addr = inet_addr("127.0.0.2");
bzero(&(my_addr.sin_zero),8);
if (bind(sockfd, (struct sockaddr *)&my_addr, sizeof(struct sockaddr)) == -1)
{
perror("bind出错!");
exit(1);
}
if (listen(sockfd, 5) == -1)
{
perror("listen出错!");
exit(1);
}
while(1)
{
sin_size = sizeof(struct sockaddr_in);
printf("Server waiting\n");
if ((client_fd = accept(sockfd, (struct sockaddr *)&remote_addr, &sin_size)) == -1)
{
perror("accept出错");
continue;
}
printf("received a connection from server ", inet_ntoa(remote_addr.sin_addr));
if (!fork()) { /* 子进程代码段 */
if (send(client_fd, "Hello, you are connected! ", 26, 0) == -1)
perror("send出错!");
close(client_fd);
exit(0);
}
}
}
client端:
#include<stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <netdb.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <sys/socket.h>
#define SERVPORT 3333
#define MAXDATASIZE 100 /*每次最大数据传输量 */
main(){
int sockfd, recvbytes;
char buf[MAXDATASIZE];
struct hostent *host;
struct sockaddr_in serv_addr;
if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1){
perror("socket创建出错!");
exit(1);
}
serv_addr.sin_family=AF_INET;
serv_addr.sin_addr.s_addr=inet_addr("127.0.0.2");
serv_addr.sin_port=htons(SERVPORT);
serv_addr.sin_addr = *((struct in_addr *)host->h_addr);
bzero(&(serv_addr.sin_zero),8);
if (connect(sockfd, (struct sockaddr *)&serv_addr,
sizeof(struct sockaddr)) == -1) {
perror("connect出错!");
exit(1);
}
if ((recvbytes=recv(sockfd, buf, MAXDATASIZE, 0)) ==-1) {
perror("recv出错!");
exit(1);
}
buf[recvbytes] = 10;
printf("Received: client",buf);
close(sockfd);
}
万分感谢啊